• 文献标题:   A Dual-Gate Graphene FET Model for Circuit Simulation-SPICE Implementation
  • 文献类型:   Article
  • 作  者:   UMOH IJ, KAZMIERSKI TJ, ALHASHIMI BM
  • 作者关键词:   ambipolar unipolar conduction, graphene device model, hole electron conduction, saturation displacement current, spice implementation
  • 出版物名称:   IEEE TRANSACTIONS ON NANOTECHNOLOGY
  • ISSN:   1536-125X EI 1941-0085
  • 通讯作者地址:   Univ Southampton
  • 被引频次:   16
  • DOI:   10.1109/TNANO.2013.2253490
  • 出版年:   2013

▎ 摘  要

This paper presents a SPICE compatible model of a dual-gate bilayer graphene field-effect transistor. The model describes the functionality of the transistor in all the regions of operation for both hole and electron conduction. We present closed-form analytical equations that define the boundary points between the regions to ensure Jacobian continuity for efficient circuit simulator implementation. A saturation displacement current is proposed to model the drain current when the channel becomes ambipolar. The model proposes a quantum capacitance that varies with the surface potential. The model has been implemented in Berkeley SPICE-3, and it shows a good agreement against experimental data with the normalized root-mean-square error less than 10%.